I'm with Adam on this one. Makok is my favorite variety, mostly because it stays small on its own, no pruning required, and bears low to the ground. Chicos can get to become very big trees, at least here, so it's nice to have one that is dwarfing on its own. The fruit is also nice with no grit, and is torpedo shaped. The other 2 cultivars i have are Sao Manila and Krasuey. Sao Manila is a nice big fruit and very productive tree. Krasuey also nice but not as productive. Here is a photo of these 3 cultivars:
Another cultivar i like but have never been able to get is Prolific. The name says it all--the trees get absolutely loaded with fruit.
I also had an interesting chico at Frankie's nursery, one that can be eaten even when still hard, and is sweet, but i forget the name of it. All other chicos are incredibly terrible if eaten hard. Here that is a real advantage because as soon as they soften the fruits are stung by fruit flies.
Chico is very popular in Hawaii, but only among the Phillippine people. It is a fruit that has never won any kind of wide acceptance. Chico was introduced into Phillippines, Thailand, and India a very long time ago and is a very popular fruit there.
Oscar